Doc-de: update macros.itely and nitpicks

[lilypond.git] / Documentation / user / tweaks.itely

diff --git a/Documentation/user/tweaks.itely b/Documentation/user/tweaks.itely
index dd38806ad60c0391b370663f8b2c20debcf52853..c0a6e72af90c16228344db8752d83f9ead97f49a 100644 (file)
--- a/Documentation/user/tweaks.itely
+++ b/Documentation/user/tweaks.itely
@@ -1053,6 +1053,22 @@ it by adding the correct context:
 
 Now the bar lines have vanished.
 
+Note, though, that setting the @code{stencil} property to @code{#f}
+will cause errors when the dimensions of the object are required for
+correct processing.  For example, errors will be generated if the
+@code{stencil} property of the @code{NoteHead} object is set to
+@code{#f}.  If this is the case, you can instead use the
+@code{point-stencil} function, which sets the stencil to a object
+with zero size:
+
+@lilypond[quote,verbatim,relative=2]
+{
+  c c
+  \once \override NoteHead #'stencil = #point-stencil
+  c c
+}
+@end lilypond
+
 @subheading break-visibility
 
 @cindex break-visibility property
@@ -1808,7 +1824,7 @@ notes of a chord, as shown:
 @end lilypond
 
 @noindent
-but this may be overriden to manually force all or any of the
+but this may be overridden to manually force all or any of the
 individual fingering numbers above or below:
 
 @cindex fingering example